Question

regular dinner = 2 tacos & 3 enchailada for 2.39

special dinner = 3 tacos & 4 enchiladas for 4.23

what is the average price for a taco & enchilada?

Let t be tacos and e be enchiladas.

A regular dinner would be represented as: 2t + 3e = 2.39

and a special dinner would be represented as: 3t + 4e = 4.23

The next step would be to solve the two equations, once for t and once for e.

Call those prices T and E.

2 T + 3 E = 2.29
3 T + 4 E = 4.23

Solve these two equations in two unknowns for T and E.

Hint: multiply the first equation by 3 and the second equaiton by 2, and subtract them.